organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Protoctista Hogg, 1860
     Phylum Xanthophyta Allorge, in Fritsch (1935) see Class Xanthophyceae P. Allorge ex Fritsch (1935)
       Class Heterococcales see Order Mischococcales
         Genus Ophiocytium Nägeli (1849), nom. cons.
           Ophiocytium arbuscula (A.Braun) Rabenh. see Ophiocytium arbusculum (A.Braun) Rabenh.
           Ophiocytium majus Nägeli see Ophiocytium maius Nägeli